Author-columnist David Pogue and Jordan Hubbard, Apple’s manager of the Darwin (UNIX-based) core of Mac OS X, will be two of the speakers at ADHOC (Advanced Developers Hands On Conference), the event formerly known as MacHack, which will be held July 21-24 in Dearborn, Michigan. Attendance is limited to 400; the deadline for early (and discounted) registration is May 30. Further details are available from the ADHOC Web site.